CN205859255U - A kind of water hammer-resistant reflux inlet structure - Google Patents
A kind of water hammer-resistant reflux inlet structure Download PDFInfo
- Publication number
- CN205859255U CN205859255U CN201620748338.XU CN201620748338U CN205859255U CN 205859255 U CN205859255 U CN 205859255U CN 201620748338 U CN201620748338 U CN 201620748338U CN 205859255 U CN205859255 U CN 205859255U
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- water
- reflux inlet
- water hammer
- resistant
- resistant reflux
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Valves (AREA)
Abstract
This utility model relates to a kind of water hammer-resistant reflux inlet structure.The purpose of this utility model is to propose a kind of water hammer-resistant reflux inlet structure, improves water-carriage system protecting water hammer effect and saves construction investment.The technical solution of the utility model is: a kind of water hammer-resistant reflux inlet structure, there is the aqueduct of distance, the water pump being successively set on aqueduct along water (flow) direction and common butterfly valve, it is characterised in that: on the aqueduct between described water pump and common butterfly valve, the water hammer-resistant reflux inlet with automatic open and close function is set；Some flowing holes are had on the flap of described water hammer-resistant reflux inlet.This utility model is applicable to distance pumping plant water delivery engineering.
Description
Technical field
This utility model relates to a kind of water hammer-resistant reflux inlet structure, it is adaptable to distance pumping plant water delivery engineering.
Background technology
Non-return valve refers to rely on water body itself to flow and automatic open and close flap, the valve flow backwards for anti-water-stop body.Check
Valve belongs to a kind of automatic valve, and under the fluid pressure effect of a direction flowing, flap is opened；During the flowing of fluid opposite direction,
By the Gravitative Loads conjunction flap of fluid pressure and flap in valve seat, thus cut off flowing.Its Main Function be anti-water-stop body flow backwards,
Prevent pump and drive motor reversion, and the releasing of water body.After being commonly used in pump in distance water system, excessive to prevent
Water body flows backwards and impacts water pump, but owing to non-return valve is to be automatically switched off when water body flows backwards, speed quickly, can cause relatively
Big water hammer pressure value, therefore would generally arrange after pump when arranging non-return valve in engineering expensive superpressure relief valve,
Pressure oscillation in advance only valve or air tank etc. combine and carry out protecting water hammer, limit the use of non-return valve to a certain extent.
Summary of the invention
The technical problems to be solved in the utility model is: for the problem of above-mentioned existence, proposes a kind of water hammer-resistant reflux inlet
Structure, improves water-carriage system protecting water hammer effect and saves construction investment.
This utility model be the technical scheme is that a kind of water hammer-resistant reflux inlet structure, has the water-supply-pipe of distance
Road, the water pump being successively set on aqueduct along water (flow) direction and common butterfly valve, it is characterised in that: described water pump and common butterfly
The water hammer-resistant reflux inlet with automatic open and close function is set on the aqueduct between valve；The flap of described water hammer-resistant reflux inlet
On have some flowing holes.
The beneficial effects of the utility model are: this utility model easy construction, can reduce water hammer-resistant backflow downstream pressure
Rise and can reduce again water pump reverse rate, improve water-carriage system protecting water hammer effect, it is ensured that the safety of pumping station operation is also
Increase economic efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of flap in this utility model.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the present embodiment is a kind of water hammer-resistant reflux inlet structure, has in distance water system
Aqueduct 4, this pipeline is sequentially installed with water pump 2, water hammer-resistant reflux inlet 1 and common butterfly valve 3 along water (flow) direction.Water hammer-resistant
The flap 5 of reflux inlet 1 has automatic open and close function, and flap 5 has some flowing holes 6.During water body following current, flap 5 is opened automatically
Opening, and when water body flows backwards, flap 5 can be automatically switched off, the flowing hole 6 that flap 5 is provided with allows a small amount of water body to fall when water body flows backwards
Flow by flap 5, thus realize controlling the purpose that pressure rises and pump rotary speed rises.
The basic functional principle of the present embodiment: the flap 5 of water hammer-resistant reflux inlet 1 is preset when producing several little crossing and flows
Hole 6, when water pump accident power-off water body flows backwards, the flap 5 of water hammer-resistant reflux inlet 1 falls, and aqueduct 4 is stopped by flap 5, but
The inwhole impedance of water body is outside water hammer-resistant reflux inlet 1, but allows part current (to play part by several flowing holes 6
The effect of decompression), the excessive pressure of water hammer-resistant reflux inlet 1 so can be avoided to rise, although have a small amount of water body to cross stream but will not
The high speed causing water pump 2 is reversed, and also protects the safety of water pump 2, has reached to reduce pressure rising and can reduce again water pump 2
The dual purpose of rotational speed rate.
Owing to each engineering there are differences, the number of flowing hole 6 and size are arranged needs the feature according to each engineering
Carry out custom-made.
Claims (1)
1. a water hammer-resistant reflux inlet structure, has the aqueduct (4) of distance, is successively set on water-supply-pipe along water (flow) direction
Water pump (2) on road and common butterfly valve (3), it is characterised in that: the aqueduct between described water pump (2) and common butterfly valve (3)
(4) upper setting has the water hammer-resistant reflux inlet (1) of automatic open and close function；Open on the flap (5) of described water hammer-resistant reflux inlet (1)
There are some flowing holes (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748338.XU CN205859255U (en) | 2016-07-14 | 2016-07-14 | A kind of water hammer-resistant reflux inlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748338.XU CN205859255U (en) | 2016-07-14 | 2016-07-14 | A kind of water hammer-resistant reflux inlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205859255U true CN205859255U (en) | 2017-01-04 |
Family
ID=57648041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620748338.XU Active CN205859255U (en) | 2016-07-14 | 2016-07-14 | A kind of water hammer-resistant reflux inlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205859255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895181A (en) * | 2018-08-31 | 2018-11-27 | 杭州全威科技有限公司 | A kind of nonreturn valve core |
-
2016
- 2016-07-14 CN CN201620748338.XU patent/CN205859255U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895181A (en) * | 2018-08-31 | 2018-11-27 | 杭州全威科技有限公司 | A kind of nonreturn valve core |
| CN108895181B (en) * | 2018-08-31 | 2023-12-01 | 杭州全威科技有限公司 | One-way valve core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |